Big Ideas ABC listen

They use of shark nets to protect us from sharks is highly controversial. Do they work, what do they do to marine life, are there alternatives, and why are sharks so political?  Join Natasha Mitchell and guests at the 2024 Ocean Lovers Festival for a robust interrogation of of an issue that ignites passions.

It's a question that has focused the minds of astronauts, scientists, space entrepreneurs and enthusiasts alike – is there, could there be, life on Mars? The race is on to find out, with NASA hoping to land astronauts there by the late 2030s.

Folk legend Eric Bogle is opening up and talks about his life, his thoughts about death, friendship and love and why having a deeper message for writing songs is so much more important than money and fame. It's a rare opportunity to share a conversation with one of the best and most prolific songwriters of the last several decades. His songs have become Australian classics – like The Band Played Waltzing Matilda or No Man's Land. And as a very special treat – you'll hear the world premiere of his latest song … finished on the way to this event.

What is the future of Israelis and Palestinians in the Gaza strip and surrounding region? Can the past help us understand the tumultuous, horrifying present? And is a two-state solution a realistic response to the war in Gaza or not? Walkley Award-winning Australian journalist John Lyons, Israeli historian and political scientist Ilan Pappé, American essayist and author Nathan Thrall, and American political advisor Bruce Wolpe share their perspectives.

A wooden sarcophogas is sold in a Cairo market in the late 1800s, transported to Australia, and held in a University of Sydney collection. It remains closed for over a century. And then scientists opened its lid.  What happened next? Two leading Australian Egyptologists join Natasha Mitchell to consider the ethics, history, and science of a quest to understand life and death in Ancient Egypt and get a glimpse into one woman's world over 2500 years ago. But is it really Mer-Neith-It_Es?

For decades, Mary Beard has forged her own path through the male dominated field of academia, from the ruins of Rome to the trenches of Twitter, to become "the world's most famous classicist".